Murasaki
What's special about Murasaki
Japanese purple-skinned, white-fleshed. Sweet, dry, chestnut-like.
Growing this variety
Murasaki follows the same growing basics as Sweet Potato. Variety-specific maturity above; everything else below applies to the whole Sweet Potato family.
Germination
Spacing & depth
How to plant
Sweet potatoes are grown from rooted stem cuttings called slips, not seed. Suspend a supermarket tuber half-submerged in water on a warm sill; when 6-in sprouts appear, twist them off and root in water for 1 week. Plant slips into loose ridged soil after nights are warm. Dig gently before frost.
Grower's tip
Cure dug roots at 80–85°F and 85% humidity for 10 days — that converts starch to sugar and heals nicks. Then store at 55–60°F for months.
Soil preferences
Well-drained soil with steady moisture at the root zone.
6.0–7.0
Compost at planting; go easy on nitrogen or you get all leaf and no flower or fruit.
Watering
Even moisture through flowering and fruiting; vines dry out fast on a sunny wall.
Soaker or drip at the base — never onto the canopy.
Overwatered: yellow lower leaves, mildew. Underwatered: curled tips, dropped flowers.
Prefers top-watering — Top-water at the base. Wet foliage spreads late blight and early blight; keep leaves as dry as possible.
Temperature tolerance
70–85°F (21–29°C) for annual vines; hardy woody vines are much broader
55–70°F (13–21°C)
Annual vines are frost-tender; woody perennial vines are hardy to their rated zone.
Container growing
Possible with the right cultivar
5–15 gal (19–57 L) with a trellis anchored to the pot or wall
Potted vines dry out daily in heat — plan for it before you plant.
Detailed harvesting
Train and tie in new growth weekly during the growing season; prune woody vines while dormant.
Post-harvest storage & preservation
Not applicable for ornamental vines; fruiting vines follow their species.
Culinary, medicinal & other uses
Vertical screening, shade, flowers and fruit in a footprint the size of a dinner plate.
Medicinal or traditional uses are shared for interest only — this is not medical advice. Consult a qualified professional before using any plant medicinally.
Seed saving
Insect-pollinated for most species.
Isolate or bag flowers to keep a strain true.
Let pods or fruit ripen fully on the vine, then clean and dry the seed.
Your zone's planting calendar
Pick your USDA hardiness zone and we'll estimate the key dates for sweet potato in your area. These are regional averages — always check your own last-frost forecast before sowing.
My Murasaki Sweet Potato notes
Murasaki Sweet Potato seeds on hand
Track packets and loose seeds you already have. Private to your account.
Par level — leave at 0 for no alert. Anything below par shows on Seed Starting and your shopping list.
Order more seeds
Running low? Reorder from one of these seed stores.
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Other Sweet Potato varieties
Beauregard
100 daysThe standard grocery-store orange sweet potato — reliable, productive, stores well.
Georgia Jet
90 daysFastest-maturing — the best sweet potato for northern gardens.
Bonita
100 daysWhite-fleshed, tan-skinned — mild and creamy, less sweet than orange types.
Molokai Purple
120 daysDeep purple flesh from Hawaii — antioxidant powerhouse, striking on the plate.